Abstract 1. AN OIL COMPOSITION SUITABLE FOR THE IMPREGNATION OF TRI-FIBROUS PAPER MATERIALS TO FORM ELECTRICAL INSULATORS, SAID COMPOSITION HAVING A VISCOSITY AT 50*C. OF ABOUT 2500 TO ABOUT 2800 CENTISTOKES, A MAXIMUM VISCOSITY AT 100*C. OF 150 CENTISTOKES, A TANGENT OF LOSS ANGLE AT 100*F. OF LESS THAN 0.100, AN INCREASE OF TANGENT OF LOSS ANGLE LESS THAN 100% AND A DECLINE IN RESISTIVITY AT 100%C. OF LESS THAN 50% AFTER BUBBLING AIR THROUGH THE OIL COMPOSITION FOR 3 HOURS AT 125*C., SAID COMPOSITION TRI-CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF A MINERAL OIL SELECTED FROM THE GROUP CONSISTING OF NAPHTHENIC, SEMI-PARAFFINIC AND PARAFFINIC OILS, AND WITHIN THE RANGE OF 0.1 TO 50 WT. PERCENT OF A THERMOPLASTIC PETROLEUM RESIN HAVING A SOFTENING POINT IN THE RANGE OF 50* TO 180*C., SAID RESIN BEING OBTAINED BY POLYMERIZING A STEAM CRACKED PETROLEUM DISTILLATE, OR FRACTION THEREOF, BOILING IN THE RANGE OF 30* TO 280*C., IN THE PRESENCE OF A FRIEDEL-CRAFTS CATALYST.
AN OIL COMPOSITION SUITABLE FOR THE IMPREGNATION OF TRI-FIBROUS PAPER MATERIALS TO FORM ELECTRICAL INSULATORS, SAID COMPOSITION HAVING A VISCOSITY AT 50*C. OF ABOUT 2500 TO ABOUT 2800 CENTISTOKES, A MAXIMUM VISCOSITY AT 100*C. OF 150 CENTISTOKES, A TANGENT OF LOSS ANGLE AT 100*F. OF LESS THAN 0.100, AN INCREASE OF TANGENT OF LOSS ANGLE LESS THAN 100% AND A DECLINE IN RESISTIVITY AT 100%C. OF LESS THAN 50% AFTER BUBBLING AIR THROUGH THE OIL COMPOSITION FOR 3 HOURS AT 125*C., SAID COMPOSITION TRI-CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF A MINERAL OIL SELECTED FROM THE GROUP CONSISTING OF NAPHTHENIC, SEMI-PARAFFINIC AND PARAFFINIC OILS, AND WITHIN THE RANGE OF 0.1 TO 50 WT. PERCENT OF A THERMOPLASTIC PETROLEUM RESIN HAVING A SOFTENING POINT IN THE RANGE OF 50* TO 180*C., SAID RESIN BEING OBTAINED BY POLYMERIZING A STEAM CRACKED PETROLEUM DISTILLATE, OR FRACTION THEREOF, BOILING IN THE RANGE OF 30* TO 280*C., IN THE PRESENCE OF A FRIEDEL-CRAFTS CATALYST.
Claim 2
Dependent Claim
159 words
AN OIL COMPOSITION SUITABLE FOR THE IMPREGNATION OF TRI-FIBROUS PAPER MATERIALS TO FORM ELECTRICAL INSULATORS, SAID COMPOSITION HAVING A VISCOSITY AT 50*C. OF ABOUT 2500 TO ABOUT 2800 CENTISTOKES, A MAXIMUM VISCOSITY AT 100*C. OF 150 CENTISTOKES, A TANGENT OF LOSS ANGLE AT 100*F. OF LESS THAN 0.100, AN INCREASE OF TANGENT OF LOSS ANGLE LESS THAN 100% AND A DECLINE IN RESISTIVITY AT 100%C. OF LESS THAN 50% AFTER BUBBLING AIR THROUGH THE OIL COMPOSITION FOR 3 HOURS AT 125*C., SAID COMPOSITION TRI-CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF A MINERAL OIL SELECTED FROM THE GROUP CONSISTING OF NAPHTHENIC, SEMI-PARAFFINIC AND PARAFFINIC OILS, AND WITHIN THE RANGE OF 0.1 TO 50 WT. PERCENT OF A THERMOPLASTIC PETROLEUM RESIN HAVING A SOFTENING POINT IN THE RANGE OF 50* TO 180*C., SAID RESIN BEING OBTAINED BY POLYMERIZING A STEAM CRACKED PETROLEUM DISTILLATE, OR FRACTION THEREOF, BOILING IN THE RANGE OF 30* TO 280*C., IN THE PRESENCE OF A FRIEDEL-CRAFTS CATALYST.